Governor.



I'iois, have invented certain new' UNITED STATES PATENT OEEIOE.-

IRA J...IABCOCK,'OE CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, To NATIONAL BRAKE AND'ELECTRIG COMPANY, or MILWAUKEE, WISCONSIN, A CORPORATION OE WISCONSIN.

GOVERNOR.

Specification of Letters Patent.

Patented Dec. 17', 1907.

Application filed lNovember 7. 1906` Serial No. 342.345.

To all whom it may concern:

` Be it known that I, IRA J. BAB'COCK, a citizenof the United States, residing at Chlcago, in the countyl of Cook and State of Illiand useful Improvements 1n Governors, of which the I iollfowing is a specification.

mounted transverse to This invention concerns .fluid pressure governors and has reference, more particularly, to governors l'or air brake systems such las are used upon railway cars to close the Circuit of an electric motor driving an air compressor when the pressure in the air reservolr falls to a predetermined minimum, and to open the circuit again when the pressure in the reservoir is raised to a predetermined maximum.

Theobject of my invention is to effect certain improvements in the Construction of governors Voi. the type disclosed in anA application filed September 15, 1905, by John J. Nei', and serially numbered 278,561, in which is employed a rod moved in one direction by finid pressure and in the other by a spring, and a toggle for operating a Circuit controller the rod and buckled on one side 'or the other by parts on the rod vbetween which `the .toggle has a limited amount of movement free of the rod. My

invention is directed at improving the mechanical construction of such governors, re-

ucing the size thereof and mounting the "parts of the toggle and its actuating spring Figure 1 isa sectional-elevation ofthe governor, the section being on line 1-1 of Fig. 2, Fig. 2'is a transverse Section on line 2--2 of Fig. 1', Fig. 3 lis a detail view of thevparts'of lthe togglein ysection on line 3 3 of Fig. '4, and Fig. 4 is a detail view in section on line 4-4 of Fig. 1.

Referring to the ldrawings,'th e parts of the ,governor are mounted Within a rectangular vcasing 1 havlng two integral cylindrical extensions 2 and 3 at opposite sides thereof.

extension 2 forms a cylinder in which a -plston 4 is adaptedto Vreciprocate and this '1- piston is carried on one end of a rod v5 whose vother end is adapted to reciprocate in a bear- ...Ing Within the extension 3;V Secured to the endvof thev extension 2 is a conductor-6 pro- Ca-ted to viding a passage-way from the compressed air reservoir to the extension 2 so that the pressure within the reservoir is communithe outer surface of piston' 4 andY tends to move the piston and the rod 5 downwardly in Fig. 1. Such movement is op-b posed by two springs 7 and 8. Loose on rod' 5 is a collar 9. A spring 7 encircles rod 5 and bears at one-end against collar 9 and at the other against piston 4; this spring is under tension from compression. Encircling spring 7 is a second spring 8 secured at one end to the collar 9 and at the other to the Casingas. indicated at S; this spring is. under tension by being extended.v This arrangement of the spring devices for moving rod 5 in one direction Oilers important advantages; by it the maximum length or spring and there- Jfore the maximum sensitiveness is obtained in an apparatus ofthe minimum size and also the same total length of s ring is employed throughout. variations in tlle limits between which the system is to operate. To arrange the governor for operating between comparatively lowpressure limits, the inner or compression spring is made shorter and the Outer or extension spring made longer, and for operating between comparatively high pressure limits the reverse arrangement is employed, thus using practically the same total length of s ring, and therefore the same size casing, in a l cases. f

Secured on rod 5 are two sto s orabutments 10 and 1.1, of any suitab e construction but preferably consisting of collars; one or both of these Collars are'adjustable on the rod, as by threading a portion of the rod and the interior of the collar, to permit of properly adjusting the operation of the governor, a suitable locking device being preferably provided for holding the collarlin its adjusted position. Between these abutments extends a toggle for operating a circuit controller, the stops 10 and 11 being spaced apart by such a distance as will permit a limited amount of free movement of the toggle between them.

Formed on the bottom ofthe casing 1 is .a stud' 12 forming abearing for one member 13 of the toggle and also for the circuit controller 14. These two parts are independently pivotedon the stud 12 but the toggle member is adapted to ,actnate the circuit memberfl is bifarcat as shown in Fig. 2,

lili

and the innerend of thecircuit controller 14 is of rectangular shape with one side 15 there-l of lying between the bifurcated arms of the toggle member. 13, as shown in Fig. 4. Formed on this rectangular portion of the circuit controller is a socket to receive the end of a rod 16 of wood or other insulating material, on which are mounted two electrically connected clips 17 adapted to be moved into and out of engagement with two binding posts 1S mounted on the casing 1.

"lhe toggle member 13 is of such length that the end thereof lies between Athe two abutinents 10 and 11 4and the other member 19 of the toggle is pivotally connected to this end of member 13. Since the toggle member 13 is mounted on a stationary pivot, it will bc seen that as. the toggle isbu'ckled the ineinber 1Q thereof must move axially, and to provide for this movement, I pivot the outer end ofthe toggle member 1S) to a lever 20 which at its other end is .pivotally mounted upon a stud 21 formed on the casing 1, so that as the toggle is buckled, the lever 2() will swing aroundl on its pivot 21 to permit of the necessary amount of axial movement of the toggle member' V19. 'llie spring for effecting the buckling of the toggle is arranged to act upon the lever 20 to cause this buckling movement; This spring is shown at 22, Fig. 1, one end tliercof being carried around the lever 2O Aand the other end around a lever 23, mounted substaiitially iarallel to the lever`20, but s iaced apart therefrom.v Lever 23 is pivotally mounted at one end upon a stud 24 formed on the casing 1 and at its other end is connor-.ted b r a link 25 to an oli-set on the circuit controller 14. In order to adjust. theA tension of the spring the non-adjacent cdgcsof the levers 2() and 23 may be provided with a series of teeth, as shown, which will serve to hold the ends of the spring in any )osition in which they are placed. The lin( 25 cooperates '.with the oll'set on the circuit controllerl to which it is pivotally connected to form an auxiliary toggle, the operation of the governor serving t`o move the, point of pivotal connection of these parts tooiie side or the other of the line joining the pivotal axis of theopposite'endof link 25 and the center of stud 12. 0n account of the limited amount` of angular movement of tliemeinbers of the auxiliary toggLe, the latter has little efi'ect 'in moving the circuit controller rapidly to open or close the circuit, but when the controller is in either of its extreme positions it is held iirmly in that position against displacement by the jarring and vibration to which the governor is subjected or by the movement of the toggle-member 13 before engaging the circuit controller. A j

Secured on or formed Integral with the casing is a stop 28 extending between the abutnientsor collars 10 and 11 and servingA topievent excessive movement of the in either direction.

In the operation of the governor, the rod 5 and piston 4-reciprocate in response to variations' of the pressure within the coinpressed air reservoir. The arrangement of the springs 7 and 8 and the adjustability of the collars 10 `and ll'perniit of readily ad-l j usting the governor ,to open and close the motor circuit at the desired pressures. Fig. 1 shows the parts in the position in which the motor circuit is open. As the pressure within the reservoir and therefore the pressure against the piston 4 falls, the

rod 5 is moved upwardly in Fig. 1 andthe abutment 1]. thereon engages the oint of iivotal connection of the two togg e meniliei's and moves the ends of the toggle ineinbers with it. When this movement has continued to such anextent that the oint of pivotal connection of the two togg e members ust passes the line of the pivots of the outer ends of the toggle members, the spring 22 acting on the lever 20 quickly buckles the toggle on .the side op )osite to that on which it is shown as buckled in F ig. 1, carrying the pivoted ends of the toggle members over to a position in which one or both of them engage the abutment 1() and immediately after the movement of the toggle members under the tension of spring 22 begins', the bottom of the bifurcation in the meinber13 engages the part 15 of the circuit controller in the manner illustrated in Fig. 3, and turns the circuit controller about stud 12 to a position in which the clips 17 engage and electrically connect binding posts 18, thus closing the motor circuit. W lien the pressure has been again raised the parts are again moved in a similar manner back to the position shown in Fig. 1, thus opening the motor circuit with 'a quick-break action.

It will be seen that when the toggle is straightened by either of the abut'inents 1() and 11,'and when theV toggle is buckled by the spring 22 on one side or the other of the linc of centers, the member 19 thereof moves axially in addition to turning on its ivot. By'pivoting the outer end of this mem er to the free end of the pivoted lever v20, this axial movement is free and unobstructed exce t by the spring 22'which is adjusted along t ie levers 20 and 23 to give the desiredtension.

rod 5.

Free and positive movement of the parts is 4 thus obtained and there is no binding oi the parts.

The movement of the circuit controller as thus described also buckles the auxiliary toggle consisting Aof the members 14 and, 25, the same spring 22 serving to buckle both this and the main toggles. The buckling of the auxiliary toggle serves" to hold the circuit controller in either of its two positions to which .it was moved .the main toggle.

A cover-plate 26V is provided; forth@ open` iso end of the casing 1 and a'gaslret 27 is provided around the edge of the casingl so thatv the casingmay be partially filled with oil including the extension 2 on bothsides of the iston 4. This oil not onlyserves --to lubricateall of the operating parts but also' aids in extinguishing a spark drawn by opening the circuit of the motor at the binding posts 18. Preferably a vent is provided'in the cover to ermit the escape of gases generated in 4reaking the circuit.4

Suitable lugs are formed on the casing to facilitate securing the governor to its support in the roper position with the rod 5 horizontally rispose( as, for instance, to the under side of a car-body when the governor is used in railway car braking system.

Having described my invention what I claim as new and desire to secure by Letters Patent ofthe United States is 1. In a fluid pressure governor, the combination of. a reciprocating rod, means for moving said rod in one direction by vfluid pressure, a spring for moving the rod in the opposite direction, a toggle, a pivoted lever carrying y one of the members of the toggle, parts moving with said rod adapted to engage said togi gle and spaced apart to permit movement ofv the toggle between them, a` spring acting on the toggle to continue movement thereof started by one of said parts and a movable circuit controller actuated by said toggle,-

substantially as set forth.. 2. Ina fluid pressure governor, thev comblnation of a casing, a rod mounted, to reciprocate therein, means within the casing for l moving said rod .1n one directlon ,by fluid pressure and in the other by a spring, a toggle and a pivoted lever carrying one of the members thereof within the casing, parts on said rod'adapted to engage said-toggle and spaced apartlto permit movement of the toggle between them, a spring acting on the toggle t'o continue movement thereof started by one of said parts, a movable circuit lcontroller within the easing actuated by said toggle and oil within the casing submerging said parts, substantially as set forth.v

3. Ina fluid pressure governor, the combination of a reciprocating rod, means for moving said rod in one direction byA fluid pressure, aspring for moving t e rod in the opposite direction, a toggle, a pivoted lever to which the free end of one of the toggle members 'is pivoted, parts moving with said rod adapted to engage said toggle and spaced apart to permit movement of the toggle between them, a

' spring acting on the toggle to continue movementlthereof started by one of said parts and a movablecirc'uit controller actuated by said toggle when the latter is operated by the spring acting thereon, substantially as Sgt forth. 1" 4. In a l'id pressure governor, the conbination of a reciprocating rod, means'for movcarrying one of ing said rod in one direction by fluid pressure, a spring for moving the rod in the opposite direction,va toggle, a pivoted lever carrying one of the members of said toggle, parts moving with said rod adapted to engage said toggle and spaced apart to permit movement of the toggle between them,fa spring acting on the toggle to continue movement thereof started by one of said parts, a movable circuit controller independently ivoted on the same axis 'as one of the mem ers of said toggle and a loose connection between said toggle member and controller whereby the former actuates the latter when operated by the spring acting thereon, substantially as set forth.

5. In a fluid pressure governor, the combination of a reciprocating rod, aV iston thereon, means for moving said. rod in one direction by fluid pressure on said piston, means for moving the'rod in the opposite direction, a toggle mounted transverse to said rod, a pivoted lever carrying one of the members of said toggle, parts moving withsaid rod adapted to engage said toggle on opposite sides of the pivotal connection of the' members thereof, said parts being separatedto permit movement of the toggle independi ently of the rod, a spring tending to buckle thetoggle, a movable circuit controller and a loose connection between the toggle and controller whereby the former actuates the latter by said spring, substantially l when buckled as set forth.

6. In aluid pressure governor, the combination of a reciprocating rod, means for moving said rod inone direction by uid pressure, a spring for-movingthe rod in the oppo` site direction, a toggle, a rying one of the members o said toggle, parts moving with said rod adapted to engage said pivoted lever. cartoggle and spaced apart to permit movement of the togg between therna spring conneet-ed to said lever and adapted-to continue movement of said toggl'estarted by one of said parts and a movable circuitcontroller actuated by said toggle, substantially as set forth.

7. Ina fluid pressure governor, vthe combination of a reciprocatin moving said rod 1n one pressure, a spring for moving the rod in the opposite direction,l a toggle,- a. pivoted lever the members-of said toggle, parts moving With`said rod adapted to engage said toggle and spaced apart to permit movement of the toggle .between them, a.

spring connected to and adjustable.: along said lever, a mov able cir'cuit' controller independentl ,pivoted on the same'axis as one of the-mem by said ,toggle member actuates said conti'olle', substantially as set forth.

8.v n a fluid pressure governor, the comrod, means f or 1rect1on by fluid 115 ers of saidtoggle and4 means where- -125 bination of ,a reciprocating-rod, .a piston thereon, means for Vmoving said 'rod 1n one 130 direction by fluid pressure on said piston,

said rod, a ivoted lever carrying one of the members osaid toggle, a sprin r connectedto and adjustablealong said lever, parts moving with said rod adapted to engage said toggle on opposite sides of the ivotal connection of the members thereo said parts.

beimr separated to permit movement of the togg e independently of the rod, a movable circuit controller and a loose connection between the toggle and controller whereby the former actuates the latter when buckled by said spring, substantially as set forth'.

E). ln a fluid pressure governor, the coml bination of a reciprocating rod, means for moving said rod 1n one direction by fluid pressure and means for moving the rod in the 1 opposite direction, a toggle mounted trans versc to said rod, a pivoted lever pivotally connected at its free end to the free end of one of the members of said toggle, a second lever, a s rin-g extending between and adjustable a ong said levers, parts moving with said rod adapted to engage said toggle adj acent to and on Vopposite sides of the pivotal connection of the members thereof, said parts being separated to permit movement of the toggle independently 'of the rod, a

movable circuit controller and a loose connection between the toggle and controller whereby the former actuates the latter when buckled by said spring, substantiallyv as set forth.

l0. ln a fiuid pressure'governor, the combination of a reciprocating rod, means for moving said rod in one direction by fluid pressure, means for moving said rodin the opposite direction by spring pressure including a collar loose on said rod and'two concentric coiled sp-rings on said rod fixed' to said collar and acting thereon in opposite directions, a circuit controller, and means controlled by the movement of said rod for actuating said circuit controller to open and close circuit with a quick-break action, substantially as set forth.

l1. ln a ffuidprcssure governor, the combination of a reciprocating rod, means for c moving the same in oncdirection by fluid pressure, a collar loose on the rod, two concentric coiled springs on said rod xed at corresponding ends to said collar, the other ends of said springs'being fixed one to said rod and the other to a stationary part and one of said springs being compressed and thel other extended, a circuit controller and means controlled by the movement of said rod for actuating said circuit controller toA open and closet-he circuit with a quick-break action, substantially as set forth.

1'2. In a fluid lpressure governor, the combination of a reciprocatin rod, means for moving the same in one direction by fluid pressure, a collar loose on the rod, two concentric coiled springs on said rod fixed at corresponding ends to'said collar, the other ends 'of said springs being fixed one to said rod and theother to a stationary part and one of said springs being compressed and the other extended, abutments on said rod, a toggle extending between said abutnients and movable between them independently of the rod, a spring for buckling the toggle and a circuit controller actuated by said toggle to o` en and close the circuit with a quick- .brea r-action, substantially as set forth.

13. In a fluid pressure governor, the'combination of a member actuated in one direction by fluid pressure and the other by a spring, a toggle controlled by the movement of said member, a spring for buckling the toggle, va movable circuit controller loosely connected to said toggle and actuated thereby, and an auxiliary toggle for holding said circuit controller in the position to which it is moved by said first-named toggle, substantially as set forth.

14. In a fluid pressure governor, the com bination of a member actuated in one direction by ffuid pressure and the other by a spring, a toggle controlled by the movement vof said member, a spring for buckling the toggle, a pivoted circuit controller loosely connectedto said toggle and actuated there by, and a link pivotally connected to said circuit controller and forming therewith an auxiliary toggle adapted to hold said circuit A controller 1n .the position to which it is moved by said first-namod toggle, substantially as set forth.

l5. In a fluid pressure governor, the combination` of a member actuated in one direction by" fluid pressure and the other by a spring, a toggle controlled by the movement of said member, a movable 'circuit controller loosely connected to said toggle and actuated thereby, an auxiliary toggle for holding said circuit controller in the position. to which it is moved by said first-named toggle, and a single spring for bucklingk both said toggles, substantially as set forth.

This specification signed and witnessed this Sist dayf of October, 1906.

IRA J. BABCOCK.

Witnesses:

U. G. CASE, Josizrir THAI.. 

